#s(tz
   (#s(span #s(*date 1969 10 1 0 0 0 39600) 43200 0 1969 "MHT")
    #s(span #s(*date 1901 1 1 0 0 0 41088) 39600 0 1901 "LMT")
    #s(span -inf.0 41088 0 -inf.0 "LMT"))
   #s(*zone-span 43200 () "MHT")
   (#s(span #s(*date 1901 1 1 0 0 0 41088) 39600 0 1901 "LMT")
    #s(span -inf.0 41088 0 -inf.0 "LMT")))